./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2f774b3e755d7b6f786f7d23823d008ce09be620750647481355094233fd1ac8 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 20:19:47,200 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 20:19:47,270 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 20:19:47,278 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 20:19:47,280 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 20:19:47,306 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 20:19:47,307 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 20:19:47,308 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 20:19:47,308 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 20:19:47,308 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 20:19:47,309 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 20:19:47,309 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 20:19:47,309 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 20:19:47,310 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 20:19:47,310 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 20:19:47,311 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 20:19:47,312 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 20:19:47,314 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 20:19:47,314 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 20:19:47,314 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 20:19:47,314 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 20:19:47,315 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 20:19:47,315 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 20:19:47,315 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 20:19:47,315 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 20:19:47,316 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 20:19:47,316 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 20:19:47,316 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 20:19:47,316 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 20:19:47,316 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 20:19:47,317 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 20:19:47,317 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 20:19:47,319 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 20:19:47,319 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 20:19:47,320 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 20:19:47,320 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 20:19:47,320 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 20:19:47,320 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 20:19:47,320 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 20:19:47,320 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 20:19:47,329 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 20:19:47,330 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 20:19:47,330 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f774b3e755d7b6f786f7d23823d008ce09be620750647481355094233fd1ac8 [2024-10-12 20:19:47,538 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 20:19:47,557 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 20:19:47,559 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 20:19:47,560 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 20:19:47,564 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 20:19:47,565 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2024-10-12 20:19:48,847 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 20:19:49,033 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 20:19:49,034 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2024-10-12 20:19:49,050 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ff3328e7/695b3a26b90d4588916235d64f5ea7a3/FLAG668764693 [2024-10-12 20:19:49,071 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ff3328e7/695b3a26b90d4588916235d64f5ea7a3 [2024-10-12 20:19:49,073 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 20:19:49,074 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 20:19:49,078 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 20:19:49,078 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 20:19:49,083 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 20:19:49,083 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:19:49" (1/1) ... [2024-10-12 20:19:49,084 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1451dc01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:49, skipping insertion in model container [2024-10-12 20:19:49,084 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:19:49" (1/1) ... [2024-10-12 20:19:49,123 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 20:19:49,304 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[7471,7484] [2024-10-12 20:19:49,340 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 20:19:49,354 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 20:19:49,394 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[7471,7484] [2024-10-12 20:19:49,418 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 20:19:49,433 INFO L204 MainTranslator]: Completed translation [2024-10-12 20:19:49,434 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:49 WrapperNode [2024-10-12 20:19:49,434 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 20:19:49,435 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 20:19:49,435 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 20:19:49,435 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 20:19:49,441 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:49" (1/1) ... [2024-10-12 20:19:49,450 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:49" (1/1) ... [2024-10-12 20:19:49,488 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 626 [2024-10-12 20:19:49,489 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 20:19:49,490 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 20:19:49,490 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 20:19:49,490 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 20:19:49,499 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:49" (1/1) ... [2024-10-12 20:19:49,499 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:49" (1/1) ... [2024-10-12 20:19:49,502 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:49" (1/1) ... [2024-10-12 20:19:49,517 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-12 20:19:49,517 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:49" (1/1) ... [2024-10-12 20:19:49,518 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:49" (1/1) ... [2024-10-12 20:19:49,528 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:49" (1/1) ... [2024-10-12 20:19:49,532 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:49" (1/1) ... [2024-10-12 20:19:49,538 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:49" (1/1) ... [2024-10-12 20:19:49,540 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:49" (1/1) ... [2024-10-12 20:19:49,544 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 20:19:49,548 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 20:19:49,549 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 20:19:49,549 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 20:19:49,550 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:49" (1/1) ... [2024-10-12 20:19:49,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 20:19:49,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 20:19:49,586 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 20:19:49,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 20:19:49,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 20:19:49,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 20:19:49,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 20:19:49,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 20:19:49,735 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 20:19:49,737 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 20:19:50,263 INFO L? ?]: Removed 86 outVars from TransFormulas that were not future-live. [2024-10-12 20:19:50,263 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 20:19:50,318 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 20:19:50,318 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-12 20:19:50,323 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:19:50 BoogieIcfgContainer [2024-10-12 20:19:50,324 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 20:19:50,325 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 20:19:50,325 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 20:19:50,332 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 20:19:50,332 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:19:49" (1/3) ... [2024-10-12 20:19:50,333 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79f89561 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:19:50, skipping insertion in model container [2024-10-12 20:19:50,333 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:49" (2/3) ... [2024-10-12 20:19:50,333 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79f89561 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:19:50, skipping insertion in model container [2024-10-12 20:19:50,333 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:19:50" (3/3) ... [2024-10-12 20:19:50,334 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2024-10-12 20:19:50,387 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 20:19:50,388 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 20:19:50,447 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 20:19:50,452 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1ec0f14, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 20:19:50,453 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 20:19:50,457 INFO L276 IsEmpty]: Start isEmpty. Operand has 146 states, 144 states have (on average 1.7222222222222223) internal successors, (248), 145 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:50,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-10-12 20:19:50,464 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:19:50,465 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:19:50,465 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:19:50,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:19:50,469 INFO L85 PathProgramCache]: Analyzing trace with hash -2137358278, now seen corresponding path program 1 times [2024-10-12 20:19:50,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:19:50,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376728744] [2024-10-12 20:19:50,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:19:50,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:19:50,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:19:50,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:19:50,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:19:50,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376728744] [2024-10-12 20:19:50,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376728744] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:19:50,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:19:50,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 20:19:50,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619471787] [2024-10-12 20:19:50,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:19:50,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 20:19:50,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:19:50,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 20:19:50,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 20:19:50,952 INFO L87 Difference]: Start difference. First operand has 146 states, 144 states have (on average 1.7222222222222223) internal successors, (248), 145 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:51,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:19:51,160 INFO L93 Difference]: Finished difference Result 462 states and 751 transitions. [2024-10-12 20:19:51,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 20:19:51,162 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-10-12 20:19:51,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:19:51,174 INFO L225 Difference]: With dead ends: 462 [2024-10-12 20:19:51,174 INFO L226 Difference]: Without dead ends: 393 [2024-10-12 20:19:51,176 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-12 20:19:51,179 INFO L432 NwaCegarLoop]: 291 mSDtfsCounter, 826 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 20:19:51,179 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 845 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 20:19:51,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2024-10-12 20:19:51,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 231. [2024-10-12 20:19:51,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.491304347826087) internal successors, (343), 230 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:51,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 343 transitions. [2024-10-12 20:19:51,218 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 343 transitions. Word has length 48 [2024-10-12 20:19:51,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:19:51,218 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 343 transitions. [2024-10-12 20:19:51,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:51,219 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 343 transitions. [2024-10-12 20:19:51,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-10-12 20:19:51,220 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:19:51,220 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:19:51,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 20:19:51,221 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:19:51,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:19:51,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1438921462, now seen corresponding path program 1 times [2024-10-12 20:19:51,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:19:51,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202820595] [2024-10-12 20:19:51,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:19:51,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:19:51,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:19:51,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:19:51,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:19:51,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202820595] [2024-10-12 20:19:51,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202820595] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:19:51,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:19:51,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:19:51,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148391918] [2024-10-12 20:19:51,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:19:51,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:19:51,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:19:51,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:19:51,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:19:51,322 INFO L87 Difference]: Start difference. First operand 231 states and 343 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:51,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:19:51,347 INFO L93 Difference]: Finished difference Result 569 states and 863 transitions. [2024-10-12 20:19:51,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:19:51,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-10-12 20:19:51,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:19:51,349 INFO L225 Difference]: With dead ends: 569 [2024-10-12 20:19:51,350 INFO L226 Difference]: Without dead ends: 401 [2024-10-12 20:19:51,350 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:19:51,351 INFO L432 NwaCegarLoop]: 204 mSDtfsCounter, 141 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:19:51,352 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 388 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:19:51,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2024-10-12 20:19:51,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 399. [2024-10-12 20:19:51,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 398 states have (on average 1.4924623115577889) internal successors, (594), 398 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:51,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 594 transitions. [2024-10-12 20:19:51,369 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 594 transitions. Word has length 51 [2024-10-12 20:19:51,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:19:51,370 INFO L471 AbstractCegarLoop]: Abstraction has 399 states and 594 transitions. [2024-10-12 20:19:51,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:51,371 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 594 transitions. [2024-10-12 20:19:51,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-10-12 20:19:51,373 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:19:51,374 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:19:51,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 20:19:51,374 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:19:51,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:19:51,376 INFO L85 PathProgramCache]: Analyzing trace with hash 166941323, now seen corresponding path program 1 times [2024-10-12 20:19:51,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:19:51,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144427010] [2024-10-12 20:19:51,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:19:51,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:19:51,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:19:51,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:19:51,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:19:51,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144427010] [2024-10-12 20:19:51,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144427010] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:19:51,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:19:51,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:19:51,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125223368] [2024-10-12 20:19:51,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:19:51,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:19:51,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:19:51,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:19:51,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:19:51,456 INFO L87 Difference]: Start difference. First operand 399 states and 594 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:51,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:19:51,479 INFO L93 Difference]: Finished difference Result 979 states and 1474 transitions. [2024-10-12 20:19:51,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:19:51,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-10-12 20:19:51,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:19:51,482 INFO L225 Difference]: With dead ends: 979 [2024-10-12 20:19:51,482 INFO L226 Difference]: Without dead ends: 691 [2024-10-12 20:19:51,484 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:19:51,485 INFO L432 NwaCegarLoop]: 204 mSDtfsCounter, 128 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:19:51,486 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 388 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:19:51,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2024-10-12 20:19:51,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 689. [2024-10-12 20:19:51,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 688 states have (on average 1.4796511627906976) internal successors, (1018), 688 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:51,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 1018 transitions. [2024-10-12 20:19:51,501 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 1018 transitions. Word has length 51 [2024-10-12 20:19:51,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:19:51,501 INFO L471 AbstractCegarLoop]: Abstraction has 689 states and 1018 transitions. [2024-10-12 20:19:51,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:51,501 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 1018 transitions. [2024-10-12 20:19:51,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-10-12 20:19:51,503 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:19:51,503 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:19:51,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 20:19:51,503 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:19:51,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:19:51,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1236415573, now seen corresponding path program 1 times [2024-10-12 20:19:51,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:19:51,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069715180] [2024-10-12 20:19:51,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:19:51,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:19:51,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:19:51,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:19:51,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:19:51,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069715180] [2024-10-12 20:19:51,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069715180] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:19:51,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:19:51,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:19:51,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185870725] [2024-10-12 20:19:51,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:19:51,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:19:51,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:19:51,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:19:51,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:19:51,589 INFO L87 Difference]: Start difference. First operand 689 states and 1018 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:51,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:19:51,666 INFO L93 Difference]: Finished difference Result 1812 states and 2683 transitions. [2024-10-12 20:19:51,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:19:51,666 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-10-12 20:19:51,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:19:51,669 INFO L225 Difference]: With dead ends: 1812 [2024-10-12 20:19:51,670 INFO L226 Difference]: Without dead ends: 1210 [2024-10-12 20:19:51,671 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:19:51,671 INFO L432 NwaCegarLoop]: 202 mSDtfsCounter, 137 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 20:19:51,672 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 396 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 20:19:51,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2024-10-12 20:19:51,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1208. [2024-10-12 20:19:51,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1208 states, 1207 states have (on average 1.4407622203811101) internal successors, (1739), 1207 states have internal predecessors, (1739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:51,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1739 transitions. [2024-10-12 20:19:51,690 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1739 transitions. Word has length 51 [2024-10-12 20:19:51,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:19:51,690 INFO L471 AbstractCegarLoop]: Abstraction has 1208 states and 1739 transitions. [2024-10-12 20:19:51,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:51,690 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1739 transitions. [2024-10-12 20:19:51,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-12 20:19:51,692 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:19:51,692 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:19:51,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 20:19:51,692 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:19:51,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:19:51,693 INFO L85 PathProgramCache]: Analyzing trace with hash 499220147, now seen corresponding path program 1 times [2024-10-12 20:19:51,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:19:51,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025728436] [2024-10-12 20:19:51,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:19:51,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:19:51,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:19:51,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:19:51,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:19:51,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025728436] [2024-10-12 20:19:51,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025728436] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:19:51,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:19:51,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 20:19:51,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056544834] [2024-10-12 20:19:51,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:19:51,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 20:19:51,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:19:51,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 20:19:51,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 20:19:51,824 INFO L87 Difference]: Start difference. First operand 1208 states and 1739 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:51,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:19:51,909 INFO L93 Difference]: Finished difference Result 2351 states and 3450 transitions. [2024-10-12 20:19:51,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 20:19:51,910 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-10-12 20:19:51,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:19:51,918 INFO L225 Difference]: With dead ends: 2351 [2024-10-12 20:19:51,918 INFO L226 Difference]: Without dead ends: 2005 [2024-10-12 20:19:51,919 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-12 20:19:51,922 INFO L432 NwaCegarLoop]: 361 mSDtfsCounter, 556 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 20:19:51,923 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [556 Valid, 882 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 20:19:51,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2005 states. [2024-10-12 20:19:51,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2005 to 1613. [2024-10-12 20:19:51,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1613 states, 1612 states have (on average 1.4478908188585609) internal successors, (2334), 1612 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:51,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1613 states to 1613 states and 2334 transitions. [2024-10-12 20:19:51,953 INFO L78 Accepts]: Start accepts. Automaton has 1613 states and 2334 transitions. Word has length 52 [2024-10-12 20:19:51,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:19:51,953 INFO L471 AbstractCegarLoop]: Abstraction has 1613 states and 2334 transitions. [2024-10-12 20:19:51,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:51,954 INFO L276 IsEmpty]: Start isEmpty. Operand 1613 states and 2334 transitions. [2024-10-12 20:19:51,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-12 20:19:51,955 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:19:51,955 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:19:51,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 20:19:51,956 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:19:51,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:19:51,957 INFO L85 PathProgramCache]: Analyzing trace with hash -175385467, now seen corresponding path program 1 times [2024-10-12 20:19:51,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:19:51,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218593280] [2024-10-12 20:19:51,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:19:51,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:19:51,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:19:52,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:19:52,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:19:52,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218593280] [2024-10-12 20:19:52,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218593280] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:19:52,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:19:52,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 20:19:52,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869448430] [2024-10-12 20:19:52,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:19:52,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 20:19:52,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:19:52,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 20:19:52,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 20:19:52,082 INFO L87 Difference]: Start difference. First operand 1613 states and 2334 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:52,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:19:52,153 INFO L93 Difference]: Finished difference Result 2725 states and 4000 transitions. [2024-10-12 20:19:52,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 20:19:52,154 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-10-12 20:19:52,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:19:52,160 INFO L225 Difference]: With dead ends: 2725 [2024-10-12 20:19:52,160 INFO L226 Difference]: Without dead ends: 2379 [2024-10-12 20:19:52,162 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-12 20:19:52,162 INFO L432 NwaCegarLoop]: 367 mSDtfsCounter, 562 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:19:52,162 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [562 Valid, 857 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:19:52,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2379 states. [2024-10-12 20:19:52,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2379 to 1924. [2024-10-12 20:19:52,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1924 states, 1923 states have (on average 1.452938117524701) internal successors, (2794), 1923 states have internal predecessors, (2794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:52,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 2794 transitions. [2024-10-12 20:19:52,201 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 2794 transitions. Word has length 52 [2024-10-12 20:19:52,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:19:52,201 INFO L471 AbstractCegarLoop]: Abstraction has 1924 states and 2794 transitions. [2024-10-12 20:19:52,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:52,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 2794 transitions. [2024-10-12 20:19:52,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-10-12 20:19:52,202 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:19:52,203 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:19:52,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 20:19:52,203 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:19:52,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:19:52,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1849713451, now seen corresponding path program 1 times [2024-10-12 20:19:52,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:19:52,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707257389] [2024-10-12 20:19:52,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:19:52,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:19:52,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:19:52,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:19:52,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:19:52,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707257389] [2024-10-12 20:19:52,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707257389] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:19:52,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:19:52,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 20:19:52,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429640975] [2024-10-12 20:19:52,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:19:52,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 20:19:52,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:19:52,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 20:19:52,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 20:19:52,343 INFO L87 Difference]: Start difference. First operand 1924 states and 2794 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:52,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:19:52,425 INFO L93 Difference]: Finished difference Result 3142 states and 4613 transitions. [2024-10-12 20:19:52,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 20:19:52,426 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-10-12 20:19:52,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:19:52,433 INFO L225 Difference]: With dead ends: 3142 [2024-10-12 20:19:52,433 INFO L226 Difference]: Without dead ends: 2796 [2024-10-12 20:19:52,435 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-12 20:19:52,436 INFO L432 NwaCegarLoop]: 388 mSDtfsCounter, 564 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 20:19:52,438 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [564 Valid, 987 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 20:19:52,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2796 states. [2024-10-12 20:19:52,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2796 to 2222. [2024-10-12 20:19:52,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2222 states, 2221 states have (on average 1.4574515983791085) internal successors, (3237), 2221 states have internal predecessors, (3237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:52,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2222 states to 2222 states and 3237 transitions. [2024-10-12 20:19:52,483 INFO L78 Accepts]: Start accepts. Automaton has 2222 states and 3237 transitions. Word has length 53 [2024-10-12 20:19:52,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:19:52,483 INFO L471 AbstractCegarLoop]: Abstraction has 2222 states and 3237 transitions. [2024-10-12 20:19:52,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:52,485 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states and 3237 transitions. [2024-10-12 20:19:52,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-12 20:19:52,486 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:19:52,486 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:19:52,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 20:19:52,487 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:19:52,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:19:52,488 INFO L85 PathProgramCache]: Analyzing trace with hash 212683946, now seen corresponding path program 1 times [2024-10-12 20:19:52,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:19:52,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800537180] [2024-10-12 20:19:52,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:19:52,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:19:52,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:19:52,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:19:52,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:19:52,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800537180] [2024-10-12 20:19:52,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800537180] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:19:52,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:19:52,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 20:19:52,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379810092] [2024-10-12 20:19:52,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:19:52,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 20:19:52,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:19:52,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 20:19:52,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 20:19:52,580 INFO L87 Difference]: Start difference. First operand 2222 states and 3237 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:52,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:19:52,728 INFO L93 Difference]: Finished difference Result 5209 states and 7588 transitions. [2024-10-12 20:19:52,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 20:19:52,729 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-10-12 20:19:52,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:19:52,737 INFO L225 Difference]: With dead ends: 5209 [2024-10-12 20:19:52,737 INFO L226 Difference]: Without dead ends: 3064 [2024-10-12 20:19:52,740 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-12 20:19:52,741 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 766 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 20:19:52,741 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [766 Valid, 207 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 20:19:52,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3064 states. [2024-10-12 20:19:52,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3064 to 3046. [2024-10-12 20:19:52,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3046 states, 3045 states have (on average 1.4430213464696224) internal successors, (4394), 3045 states have internal predecessors, (4394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:52,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3046 states to 3046 states and 4394 transitions. [2024-10-12 20:19:52,788 INFO L78 Accepts]: Start accepts. Automaton has 3046 states and 4394 transitions. Word has length 56 [2024-10-12 20:19:52,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:19:52,788 INFO L471 AbstractCegarLoop]: Abstraction has 3046 states and 4394 transitions. [2024-10-12 20:19:52,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:52,789 INFO L276 IsEmpty]: Start isEmpty. Operand 3046 states and 4394 transitions. [2024-10-12 20:19:52,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-10-12 20:19:52,790 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:19:52,790 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:19:52,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 20:19:52,790 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:19:52,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:19:52,791 INFO L85 PathProgramCache]: Analyzing trace with hash -2021478950, now seen corresponding path program 1 times [2024-10-12 20:19:52,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:19:52,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619851712] [2024-10-12 20:19:52,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:19:52,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:19:52,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:19:52,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:19:52,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:19:52,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619851712] [2024-10-12 20:19:52,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619851712] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:19:52,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:19:52,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 20:19:52,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471935896] [2024-10-12 20:19:52,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:19:52,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 20:19:52,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:19:52,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 20:19:52,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 20:19:52,888 INFO L87 Difference]: Start difference. First operand 3046 states and 4394 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:53,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:19:53,052 INFO L93 Difference]: Finished difference Result 7123 states and 10249 transitions. [2024-10-12 20:19:53,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 20:19:53,055 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-10-12 20:19:53,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:19:53,066 INFO L225 Difference]: With dead ends: 7123 [2024-10-12 20:19:53,066 INFO L226 Difference]: Without dead ends: 4163 [2024-10-12 20:19:53,071 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-12 20:19:53,072 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 798 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 20:19:53,073 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [798 Valid, 195 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 20:19:53,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4163 states. [2024-10-12 20:19:53,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4163 to 3046. [2024-10-12 20:19:53,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3046 states, 3045 states have (on average 1.4266009852216748) internal successors, (4344), 3045 states have internal predecessors, (4344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:53,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3046 states to 3046 states and 4344 transitions. [2024-10-12 20:19:53,131 INFO L78 Accepts]: Start accepts. Automaton has 3046 states and 4344 transitions. Word has length 57 [2024-10-12 20:19:53,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:19:53,131 INFO L471 AbstractCegarLoop]: Abstraction has 3046 states and 4344 transitions. [2024-10-12 20:19:53,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:53,132 INFO L276 IsEmpty]: Start isEmpty. Operand 3046 states and 4344 transitions. [2024-10-12 20:19:53,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-10-12 20:19:53,133 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:19:53,133 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:19:53,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-12 20:19:53,133 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:19:53,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:19:53,134 INFO L85 PathProgramCache]: Analyzing trace with hash 51729734, now seen corresponding path program 1 times [2024-10-12 20:19:53,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:19:53,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453368712] [2024-10-12 20:19:53,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:19:53,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:19:53,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:19:53,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:19:53,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:19:53,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453368712] [2024-10-12 20:19:53,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453368712] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:19:53,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:19:53,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 20:19:53,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806630366] [2024-10-12 20:19:53,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:19:53,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 20:19:53,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:19:53,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 20:19:53,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 20:19:53,218 INFO L87 Difference]: Start difference. First operand 3046 states and 4344 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:53,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:19:53,360 INFO L93 Difference]: Finished difference Result 7264 states and 10351 transitions. [2024-10-12 20:19:53,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 20:19:53,360 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-10-12 20:19:53,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:19:53,371 INFO L225 Difference]: With dead ends: 7264 [2024-10-12 20:19:53,371 INFO L226 Difference]: Without dead ends: 4259 [2024-10-12 20:19:53,376 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-12 20:19:53,376 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 775 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 20:19:53,377 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [775 Valid, 205 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 20:19:53,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4259 states. [2024-10-12 20:19:53,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4259 to 4234. [2024-10-12 20:19:53,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4234 states, 4233 states have (on average 1.4122371840302386) internal successors, (5978), 4233 states have internal predecessors, (5978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:53,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4234 states to 4234 states and 5978 transitions. [2024-10-12 20:19:53,439 INFO L78 Accepts]: Start accepts. Automaton has 4234 states and 5978 transitions. Word has length 57 [2024-10-12 20:19:53,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:19:53,439 INFO L471 AbstractCegarLoop]: Abstraction has 4234 states and 5978 transitions. [2024-10-12 20:19:53,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:53,440 INFO L276 IsEmpty]: Start isEmpty. Operand 4234 states and 5978 transitions. [2024-10-12 20:19:53,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-12 20:19:53,441 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:19:53,441 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:19:53,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-12 20:19:53,442 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:19:53,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:19:53,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1707454973, now seen corresponding path program 1 times [2024-10-12 20:19:53,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:19:53,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638386632] [2024-10-12 20:19:53,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:19:53,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:19:53,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:19:53,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:19:53,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:19:53,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638386632] [2024-10-12 20:19:53,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638386632] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:19:53,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:19:53,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 20:19:53,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176446595] [2024-10-12 20:19:53,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:19:53,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 20:19:53,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:19:53,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 20:19:53,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 20:19:53,573 INFO L87 Difference]: Start difference. First operand 4234 states and 5978 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:53,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:19:53,899 INFO L93 Difference]: Finished difference Result 10179 states and 14326 transitions. [2024-10-12 20:19:53,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 20:19:53,900 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-10-12 20:19:53,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:19:53,941 INFO L225 Difference]: With dead ends: 10179 [2024-10-12 20:19:53,942 INFO L226 Difference]: Without dead ends: 8809 [2024-10-12 20:19:53,949 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2024-10-12 20:19:53,950 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 1342 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1342 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 20:19:53,950 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1342 Valid, 363 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 20:19:53,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8809 states. [2024-10-12 20:19:54,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8809 to 4246. [2024-10-12 20:19:54,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4246 states, 4245 states have (on average 1.4120141342756183) internal successors, (5994), 4245 states have internal predecessors, (5994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:54,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4246 states to 4246 states and 5994 transitions. [2024-10-12 20:19:54,046 INFO L78 Accepts]: Start accepts. Automaton has 4246 states and 5994 transitions. Word has length 58 [2024-10-12 20:19:54,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:19:54,046 INFO L471 AbstractCegarLoop]: Abstraction has 4246 states and 5994 transitions. [2024-10-12 20:19:54,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:54,046 INFO L276 IsEmpty]: Start isEmpty. Operand 4246 states and 5994 transitions. [2024-10-12 20:19:54,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-12 20:19:54,048 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:19:54,048 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:19:54,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-12 20:19:54,048 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:19:54,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:19:54,049 INFO L85 PathProgramCache]: Analyzing trace with hash 282023699, now seen corresponding path program 1 times [2024-10-12 20:19:54,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:19:54,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024825107] [2024-10-12 20:19:54,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:19:54,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:19:54,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:19:54,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:19:54,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:19:54,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024825107] [2024-10-12 20:19:54,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024825107] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:19:54,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:19:54,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 20:19:54,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066783280] [2024-10-12 20:19:54,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:19:54,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 20:19:54,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:19:54,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 20:19:54,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 20:19:54,177 INFO L87 Difference]: Start difference. First operand 4246 states and 5994 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:54,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:19:54,409 INFO L93 Difference]: Finished difference Result 9546 states and 13394 transitions. [2024-10-12 20:19:54,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 20:19:54,410 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-10-12 20:19:54,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:19:54,423 INFO L225 Difference]: With dead ends: 9546 [2024-10-12 20:19:54,424 INFO L226 Difference]: Without dead ends: 7316 [2024-10-12 20:19:54,429 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2024-10-12 20:19:54,429 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 991 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 991 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 20:19:54,429 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [991 Valid, 311 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 20:19:54,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7316 states. [2024-10-12 20:19:54,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7316 to 4266. [2024-10-12 20:19:54,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4266 states, 4265 states have (on average 1.4110199296600234) internal successors, (6018), 4265 states have internal predecessors, (6018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:54,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4266 states to 4266 states and 6018 transitions. [2024-10-12 20:19:54,517 INFO L78 Accepts]: Start accepts. Automaton has 4266 states and 6018 transitions. Word has length 59 [2024-10-12 20:19:54,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:19:54,517 INFO L471 AbstractCegarLoop]: Abstraction has 4266 states and 6018 transitions. [2024-10-12 20:19:54,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:54,517 INFO L276 IsEmpty]: Start isEmpty. Operand 4266 states and 6018 transitions. [2024-10-12 20:19:54,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-12 20:19:54,519 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:19:54,519 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:19:54,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-12 20:19:54,520 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:19:54,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:19:54,520 INFO L85 PathProgramCache]: Analyzing trace with hash -427317132, now seen corresponding path program 1 times [2024-10-12 20:19:54,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:19:54,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574133690] [2024-10-12 20:19:54,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:19:54,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:19:54,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:19:54,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:19:54,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:19:54,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574133690] [2024-10-12 20:19:54,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574133690] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:19:54,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:19:54,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 20:19:54,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728119640] [2024-10-12 20:19:54,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:19:54,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 20:19:54,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:19:54,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 20:19:54,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 20:19:54,622 INFO L87 Difference]: Start difference. First operand 4266 states and 6018 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:54,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:19:54,865 INFO L93 Difference]: Finished difference Result 11076 states and 15591 transitions. [2024-10-12 20:19:54,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 20:19:54,865 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-10-12 20:19:54,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:19:54,878 INFO L225 Difference]: With dead ends: 11076 [2024-10-12 20:19:54,878 INFO L226 Difference]: Without dead ends: 9030 [2024-10-12 20:19:54,883 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2024-10-12 20:19:54,884 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 1172 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1172 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 20:19:54,884 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1172 Valid, 345 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 20:19:54,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9030 states. [2024-10-12 20:19:54,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9030 to 4344. [2024-10-12 20:19:54,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4344 states, 4343 states have (on average 1.4087036610637809) internal successors, (6118), 4343 states have internal predecessors, (6118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:54,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4344 states to 4344 states and 6118 transitions. [2024-10-12 20:19:54,957 INFO L78 Accepts]: Start accepts. Automaton has 4344 states and 6118 transitions. Word has length 59 [2024-10-12 20:19:54,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:19:54,958 INFO L471 AbstractCegarLoop]: Abstraction has 4344 states and 6118 transitions. [2024-10-12 20:19:54,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:54,958 INFO L276 IsEmpty]: Start isEmpty. Operand 4344 states and 6118 transitions. [2024-10-12 20:19:54,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-12 20:19:54,960 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:19:54,960 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:19:54,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-12 20:19:54,960 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:19:54,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:19:54,961 INFO L85 PathProgramCache]: Analyzing trace with hash -759996951, now seen corresponding path program 1 times [2024-10-12 20:19:54,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:19:54,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219727207] [2024-10-12 20:19:54,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:19:54,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:19:54,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:19:55,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:19:55,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:19:55,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219727207] [2024-10-12 20:19:55,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219727207] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:19:55,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:19:55,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-12 20:19:55,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007794470] [2024-10-12 20:19:55,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:19:55,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-12 20:19:55,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:19:55,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-12 20:19:55,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-12 20:19:55,232 INFO L87 Difference]: Start difference. First operand 4344 states and 6118 transitions. Second operand has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:55,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:19:55,664 INFO L93 Difference]: Finished difference Result 10475 states and 14802 transitions. [2024-10-12 20:19:55,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-12 20:19:55,665 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-10-12 20:19:55,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:19:55,675 INFO L225 Difference]: With dead ends: 10475 [2024-10-12 20:19:55,675 INFO L226 Difference]: Without dead ends: 6886 [2024-10-12 20:19:55,680 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2024-10-12 20:19:55,682 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 563 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 20:19:55,683 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [563 Valid, 776 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 20:19:55,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6886 states. [2024-10-12 20:19:55,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6886 to 4344. [2024-10-12 20:19:55,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4344 states, 4343 states have (on average 1.4073221275615935) internal successors, (6112), 4343 states have internal predecessors, (6112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:55,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4344 states to 4344 states and 6112 transitions. [2024-10-12 20:19:55,746 INFO L78 Accepts]: Start accepts. Automaton has 4344 states and 6112 transitions. Word has length 61 [2024-10-12 20:19:55,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:19:55,746 INFO L471 AbstractCegarLoop]: Abstraction has 4344 states and 6112 transitions. [2024-10-12 20:19:55,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:55,746 INFO L276 IsEmpty]: Start isEmpty. Operand 4344 states and 6112 transitions. [2024-10-12 20:19:55,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-12 20:19:55,748 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:19:55,748 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:19:55,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-12 20:19:55,749 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:19:55,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:19:55,749 INFO L85 PathProgramCache]: Analyzing trace with hash 352995879, now seen corresponding path program 1 times [2024-10-12 20:19:55,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:19:55,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348298415] [2024-10-12 20:19:55,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:19:55,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:19:55,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:19:56,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:19:56,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:19:56,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348298415] [2024-10-12 20:19:56,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348298415] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:19:56,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:19:56,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-12 20:19:56,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144170531] [2024-10-12 20:19:56,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:19:56,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-12 20:19:56,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:19:56,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-12 20:19:56,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-12 20:19:56,042 INFO L87 Difference]: Start difference. First operand 4344 states and 6112 transitions. Second operand has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:56,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:19:56,494 INFO L93 Difference]: Finished difference Result 10231 states and 14473 transitions. [2024-10-12 20:19:56,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-12 20:19:56,495 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-10-12 20:19:56,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:19:56,504 INFO L225 Difference]: With dead ends: 10231 [2024-10-12 20:19:56,505 INFO L226 Difference]: Without dead ends: 6781 [2024-10-12 20:19:56,509 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2024-10-12 20:19:56,510 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 849 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 20:19:56,510 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 678 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 20:19:56,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6781 states. [2024-10-12 20:19:56,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6781 to 4260. [2024-10-12 20:19:56,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4260 states, 4259 states have (on average 1.4047898567738906) internal successors, (5983), 4259 states have internal predecessors, (5983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:56,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4260 states to 4260 states and 5983 transitions. [2024-10-12 20:19:56,571 INFO L78 Accepts]: Start accepts. Automaton has 4260 states and 5983 transitions. Word has length 61 [2024-10-12 20:19:56,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:19:56,571 INFO L471 AbstractCegarLoop]: Abstraction has 4260 states and 5983 transitions. [2024-10-12 20:19:56,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:56,571 INFO L276 IsEmpty]: Start isEmpty. Operand 4260 states and 5983 transitions. [2024-10-12 20:19:56,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-12 20:19:56,573 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:19:56,573 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:19:56,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-12 20:19:56,573 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:19:56,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:19:56,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1958858664, now seen corresponding path program 1 times [2024-10-12 20:19:56,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:19:56,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273745695] [2024-10-12 20:19:56,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:19:56,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:19:56,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:19:56,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:19:56,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:19:56,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273745695] [2024-10-12 20:19:56,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273745695] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:19:56,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:19:56,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-12 20:19:56,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837891303] [2024-10-12 20:19:56,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:19:56,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-12 20:19:56,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:19:56,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-12 20:19:56,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-12 20:19:56,855 INFO L87 Difference]: Start difference. First operand 4260 states and 5983 transitions. Second operand has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:57,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:19:57,345 INFO L93 Difference]: Finished difference Result 11279 states and 15948 transitions. [2024-10-12 20:19:57,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-12 20:19:57,346 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-10-12 20:19:57,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:19:57,357 INFO L225 Difference]: With dead ends: 11279 [2024-10-12 20:19:57,357 INFO L226 Difference]: Without dead ends: 7700 [2024-10-12 20:19:57,362 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2024-10-12 20:19:57,362 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 854 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 20:19:57,363 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [854 Valid, 743 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 20:19:57,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7700 states. [2024-10-12 20:19:57,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7700 to 4081. [2024-10-12 20:19:57,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4081 states, 4080 states have (on average 1.402205882352941) internal successors, (5721), 4080 states have internal predecessors, (5721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:57,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4081 states to 4081 states and 5721 transitions. [2024-10-12 20:19:57,424 INFO L78 Accepts]: Start accepts. Automaton has 4081 states and 5721 transitions. Word has length 61 [2024-10-12 20:19:57,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:19:57,424 INFO L471 AbstractCegarLoop]: Abstraction has 4081 states and 5721 transitions. [2024-10-12 20:19:57,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:57,424 INFO L276 IsEmpty]: Start isEmpty. Operand 4081 states and 5721 transitions. [2024-10-12 20:19:57,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-12 20:19:57,426 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:19:57,426 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:19:57,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-12 20:19:57,426 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:19:57,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:19:57,426 INFO L85 PathProgramCache]: Analyzing trace with hash 53904949, now seen corresponding path program 1 times [2024-10-12 20:19:57,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:19:57,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229474502] [2024-10-12 20:19:57,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:19:57,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:19:57,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:19:57,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:19:57,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:19:57,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229474502] [2024-10-12 20:19:57,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229474502] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:19:57,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:19:57,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:19:57,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189675764] [2024-10-12 20:19:57,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:19:57,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:19:57,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:19:57,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:19:57,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:19:57,471 INFO L87 Difference]: Start difference. First operand 4081 states and 5721 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:57,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:19:57,494 INFO L93 Difference]: Finished difference Result 6090 states and 8562 transitions. [2024-10-12 20:19:57,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:19:57,494 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-10-12 20:19:57,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:19:57,500 INFO L225 Difference]: With dead ends: 6090 [2024-10-12 20:19:57,500 INFO L226 Difference]: Without dead ends: 3974 [2024-10-12 20:19:57,502 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:19:57,502 INFO L432 NwaCegarLoop]: 298 mSDtfsCounter, 130 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:19:57,503 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 471 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:19:57,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3974 states. [2024-10-12 20:19:57,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3974 to 3972. [2024-10-12 20:19:57,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3972 states, 3971 states have (on average 1.3863006799294888) internal successors, (5505), 3971 states have internal predecessors, (5505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:57,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3972 states to 3972 states and 5505 transitions. [2024-10-12 20:19:57,541 INFO L78 Accepts]: Start accepts. Automaton has 3972 states and 5505 transitions. Word has length 62 [2024-10-12 20:19:57,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:19:57,542 INFO L471 AbstractCegarLoop]: Abstraction has 3972 states and 5505 transitions. [2024-10-12 20:19:57,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:57,542 INFO L276 IsEmpty]: Start isEmpty. Operand 3972 states and 5505 transitions. [2024-10-12 20:19:57,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-12 20:19:57,543 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:19:57,543 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:19:57,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-12 20:19:57,544 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:19:57,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:19:57,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1841231568, now seen corresponding path program 1 times [2024-10-12 20:19:57,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:19:57,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050011489] [2024-10-12 20:19:57,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:19:57,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:19:57,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:19:57,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:19:57,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:19:57,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050011489] [2024-10-12 20:19:57,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050011489] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:19:57,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:19:57,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:19:57,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953800746] [2024-10-12 20:19:57,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:19:57,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:19:57,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:19:57,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:19:57,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:19:57,598 INFO L87 Difference]: Start difference. First operand 3972 states and 5505 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:57,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:19:57,619 INFO L93 Difference]: Finished difference Result 5477 states and 7587 transitions. [2024-10-12 20:19:57,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:19:57,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-10-12 20:19:57,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:19:57,624 INFO L225 Difference]: With dead ends: 5477 [2024-10-12 20:19:57,624 INFO L226 Difference]: Without dead ends: 3379 [2024-10-12 20:19:57,626 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:19:57,627 INFO L432 NwaCegarLoop]: 287 mSDtfsCounter, 118 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:19:57,627 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 460 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:19:57,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3379 states. [2024-10-12 20:19:57,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3379 to 3377. [2024-10-12 20:19:57,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3377 states, 3376 states have (on average 1.3593009478672986) internal successors, (4589), 3376 states have internal predecessors, (4589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:57,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3377 states to 3377 states and 4589 transitions. [2024-10-12 20:19:57,659 INFO L78 Accepts]: Start accepts. Automaton has 3377 states and 4589 transitions. Word has length 62 [2024-10-12 20:19:57,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:19:57,659 INFO L471 AbstractCegarLoop]: Abstraction has 3377 states and 4589 transitions. [2024-10-12 20:19:57,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:57,659 INFO L276 IsEmpty]: Start isEmpty. Operand 3377 states and 4589 transitions. [2024-10-12 20:19:57,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-12 20:19:57,662 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:19:57,663 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:19:57,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-12 20:19:57,663 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:19:57,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:19:57,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1950608922, now seen corresponding path program 1 times [2024-10-12 20:19:57,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:19:57,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255343728] [2024-10-12 20:19:57,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:19:57,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:19:57,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:19:57,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:19:57,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:19:57,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255343728] [2024-10-12 20:19:57,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255343728] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:19:57,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:19:57,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:19:57,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94802558] [2024-10-12 20:19:57,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:19:57,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:19:57,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:19:57,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:19:57,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:19:57,703 INFO L87 Difference]: Start difference. First operand 3377 states and 4589 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:57,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:19:57,727 INFO L93 Difference]: Finished difference Result 4126 states and 5581 transitions. [2024-10-12 20:19:57,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:19:57,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-10-12 20:19:57,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:19:57,731 INFO L225 Difference]: With dead ends: 4126 [2024-10-12 20:19:57,731 INFO L226 Difference]: Without dead ends: 2782 [2024-10-12 20:19:57,733 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:19:57,733 INFO L432 NwaCegarLoop]: 318 mSDtfsCounter, 148 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:19:57,733 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 475 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:19:57,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2782 states. [2024-10-12 20:19:57,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2782 to 2780. [2024-10-12 20:19:57,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2780 states, 2779 states have (on average 1.327455919395466) internal successors, (3689), 2779 states have internal predecessors, (3689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:57,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2780 states to 2780 states and 3689 transitions. [2024-10-12 20:19:57,759 INFO L78 Accepts]: Start accepts. Automaton has 2780 states and 3689 transitions. Word has length 62 [2024-10-12 20:19:57,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:19:57,759 INFO L471 AbstractCegarLoop]: Abstraction has 2780 states and 3689 transitions. [2024-10-12 20:19:57,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:57,760 INFO L276 IsEmpty]: Start isEmpty. Operand 2780 states and 3689 transitions. [2024-10-12 20:19:57,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-12 20:19:57,761 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:19:57,761 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:19:57,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-12 20:19:57,761 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:19:57,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:19:57,762 INFO L85 PathProgramCache]: Analyzing trace with hash 144325302, now seen corresponding path program 1 times [2024-10-12 20:19:57,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:19:57,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236975749] [2024-10-12 20:19:57,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:19:57,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:19:57,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:19:58,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:19:58,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:19:58,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236975749] [2024-10-12 20:19:58,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236975749] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:19:58,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:19:58,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-12 20:19:58,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949015361] [2024-10-12 20:19:58,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:19:58,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-12 20:19:58,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:19:58,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-12 20:19:58,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-10-12 20:19:58,275 INFO L87 Difference]: Start difference. First operand 2780 states and 3689 transitions. Second operand has 12 states, 12 states have (on average 5.25) internal successors, (63), 11 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:58,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:19:58,772 INFO L93 Difference]: Finished difference Result 4370 states and 5847 transitions. [2024-10-12 20:19:58,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-12 20:19:58,772 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 11 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-10-12 20:19:58,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:19:58,777 INFO L225 Difference]: With dead ends: 4370 [2024-10-12 20:19:58,778 INFO L226 Difference]: Without dead ends: 3982 [2024-10-12 20:19:58,779 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2024-10-12 20:19:58,780 INFO L432 NwaCegarLoop]: 176 mSDtfsCounter, 943 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 1138 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 20:19:58,780 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [943 Valid, 1138 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 20:19:58,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3982 states. [2024-10-12 20:19:58,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3982 to 2694. [2024-10-12 20:19:58,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2694 states, 2693 states have (on average 1.3271444485703676) internal successors, (3574), 2693 states have internal predecessors, (3574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:58,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2694 states to 2694 states and 3574 transitions. [2024-10-12 20:19:58,811 INFO L78 Accepts]: Start accepts. Automaton has 2694 states and 3574 transitions. Word has length 63 [2024-10-12 20:19:58,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:19:58,811 INFO L471 AbstractCegarLoop]: Abstraction has 2694 states and 3574 transitions. [2024-10-12 20:19:58,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 11 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:19:58,811 INFO L276 IsEmpty]: Start isEmpty. Operand 2694 states and 3574 transitions. [2024-10-12 20:19:58,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-12 20:19:58,813 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:19:58,813 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:19:58,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-12 20:19:58,813 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:19:58,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:19:58,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1371874894, now seen corresponding path program 1 times [2024-10-12 20:19:58,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:19:58,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488741198] [2024-10-12 20:19:58,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:19:58,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:19:58,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:19:59,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:19:59,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:19:59,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488741198] [2024-10-12 20:19:59,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488741198] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:19:59,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:19:59,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2024-10-12 20:19:59,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142554034] [2024-10-12 20:19:59,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:19:59,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-12 20:19:59,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:19:59,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-12 20:19:59,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2024-10-12 20:19:59,768 INFO L87 Difference]: Start difference. First operand 2694 states and 3574 transitions. Second operand has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:01,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:20:01,874 INFO L93 Difference]: Finished difference Result 5454 states and 7294 transitions. [2024-10-12 20:20:01,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-12 20:20:01,874 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-10-12 20:20:01,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:20:01,881 INFO L225 Difference]: With dead ends: 5454 [2024-10-12 20:20:01,882 INFO L226 Difference]: Without dead ends: 5387 [2024-10-12 20:20:01,884 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=298, Invalid=1508, Unknown=0, NotChecked=0, Total=1806 [2024-10-12 20:20:01,885 INFO L432 NwaCegarLoop]: 256 mSDtfsCounter, 1455 mSDsluCounter, 3532 mSDsCounter, 0 mSdLazyCounter, 2712 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1455 SdHoareTripleChecker+Valid, 3788 SdHoareTripleChecker+Invalid, 2713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-12 20:20:01,885 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1455 Valid, 3788 Invalid, 2713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2712 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-12 20:20:01,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5387 states. [2024-10-12 20:20:01,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5387 to 2706. [2024-10-12 20:20:01,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2706 states, 2705 states have (on average 1.3268022181146026) internal successors, (3589), 2705 states have internal predecessors, (3589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:01,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2706 states to 2706 states and 3589 transitions. [2024-10-12 20:20:01,922 INFO L78 Accepts]: Start accepts. Automaton has 2706 states and 3589 transitions. Word has length 63 [2024-10-12 20:20:01,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:20:01,922 INFO L471 AbstractCegarLoop]: Abstraction has 2706 states and 3589 transitions. [2024-10-12 20:20:01,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:01,922 INFO L276 IsEmpty]: Start isEmpty. Operand 2706 states and 3589 transitions. [2024-10-12 20:20:01,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-12 20:20:01,924 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:20:01,924 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:20:01,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-12 20:20:01,924 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:20:01,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:20:01,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1948847655, now seen corresponding path program 1 times [2024-10-12 20:20:01,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:20:01,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379275457] [2024-10-12 20:20:01,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:20:01,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:20:01,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:20:01,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:20:01,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:20:01,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379275457] [2024-10-12 20:20:01,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379275457] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:20:01,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:20:01,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:20:01,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940200509] [2024-10-12 20:20:01,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:20:01,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:20:01,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:20:01,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:20:01,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:20:01,964 INFO L87 Difference]: Start difference. First operand 2706 states and 3589 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:02,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:20:02,001 INFO L93 Difference]: Finished difference Result 4917 states and 6572 transitions. [2024-10-12 20:20:02,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:20:02,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-10-12 20:20:02,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:20:02,007 INFO L225 Difference]: With dead ends: 4917 [2024-10-12 20:20:02,007 INFO L226 Difference]: Without dead ends: 3571 [2024-10-12 20:20:02,009 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:20:02,010 INFO L432 NwaCegarLoop]: 189 mSDtfsCounter, 149 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:20:02,011 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 302 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:20:02,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3571 states. [2024-10-12 20:20:02,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3571 to 2540. [2024-10-12 20:20:02,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2540 states, 2539 states have (on average 1.3253249310752264) internal successors, (3365), 2539 states have internal predecessors, (3365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:02,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2540 states to 2540 states and 3365 transitions. [2024-10-12 20:20:02,040 INFO L78 Accepts]: Start accepts. Automaton has 2540 states and 3365 transitions. Word has length 63 [2024-10-12 20:20:02,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:20:02,040 INFO L471 AbstractCegarLoop]: Abstraction has 2540 states and 3365 transitions. [2024-10-12 20:20:02,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:02,041 INFO L276 IsEmpty]: Start isEmpty. Operand 2540 states and 3365 transitions. [2024-10-12 20:20:02,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-12 20:20:02,042 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:20:02,042 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:20:02,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-12 20:20:02,042 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:20:02,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:20:02,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1343383996, now seen corresponding path program 1 times [2024-10-12 20:20:02,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:20:02,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245136708] [2024-10-12 20:20:02,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:20:02,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:20:02,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:20:02,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:20:02,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:20:02,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245136708] [2024-10-12 20:20:02,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245136708] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:20:02,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:20:02,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-10-12 20:20:02,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890304475] [2024-10-12 20:20:02,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:20:02,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-12 20:20:02,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:20:02,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-12 20:20:02,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2024-10-12 20:20:02,679 INFO L87 Difference]: Start difference. First operand 2540 states and 3365 transitions. Second operand has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 16 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:03,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:20:03,571 INFO L93 Difference]: Finished difference Result 5028 states and 6735 transitions. [2024-10-12 20:20:03,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-12 20:20:03,572 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 16 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-10-12 20:20:03,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:20:03,577 INFO L225 Difference]: With dead ends: 5028 [2024-10-12 20:20:03,577 INFO L226 Difference]: Without dead ends: 4686 [2024-10-12 20:20:03,579 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=221, Invalid=771, Unknown=0, NotChecked=0, Total=992 [2024-10-12 20:20:03,579 INFO L432 NwaCegarLoop]: 198 mSDtfsCounter, 1201 mSDsluCounter, 1812 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1201 SdHoareTripleChecker+Valid, 2010 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 20:20:03,579 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1201 Valid, 2010 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 782 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 20:20:03,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4686 states. [2024-10-12 20:20:03,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4686 to 2464. [2024-10-12 20:20:03,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2464 states, 2463 states have (on average 1.3260251725537961) internal successors, (3266), 2463 states have internal predecessors, (3266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:03,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2464 states to 2464 states and 3266 transitions. [2024-10-12 20:20:03,608 INFO L78 Accepts]: Start accepts. Automaton has 2464 states and 3266 transitions. Word has length 64 [2024-10-12 20:20:03,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:20:03,608 INFO L471 AbstractCegarLoop]: Abstraction has 2464 states and 3266 transitions. [2024-10-12 20:20:03,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 16 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:03,609 INFO L276 IsEmpty]: Start isEmpty. Operand 2464 states and 3266 transitions. [2024-10-12 20:20:03,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-12 20:20:03,610 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:20:03,610 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:20:03,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-12 20:20:03,610 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:20:03,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:20:03,611 INFO L85 PathProgramCache]: Analyzing trace with hash -409578252, now seen corresponding path program 1 times [2024-10-12 20:20:03,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:20:03,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572049227] [2024-10-12 20:20:03,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:20:03,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:20:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:20:03,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:20:03,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:20:03,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572049227] [2024-10-12 20:20:03,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572049227] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:20:03,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:20:03,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 20:20:03,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278429727] [2024-10-12 20:20:03,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:20:03,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 20:20:03,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:20:03,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 20:20:03,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-12 20:20:03,677 INFO L87 Difference]: Start difference. First operand 2464 states and 3266 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:03,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:20:03,723 INFO L93 Difference]: Finished difference Result 2470 states and 3269 transitions. [2024-10-12 20:20:03,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 20:20:03,724 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-10-12 20:20:03,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:20:03,726 INFO L225 Difference]: With dead ends: 2470 [2024-10-12 20:20:03,726 INFO L226 Difference]: Without dead ends: 2255 [2024-10-12 20:20:03,727 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-12 20:20:03,728 INFO L432 NwaCegarLoop]: 301 mSDtfsCounter, 528 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:20:03,728 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [528 Valid, 604 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:20:03,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2255 states. [2024-10-12 20:20:03,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2255 to 2251. [2024-10-12 20:20:03,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2251 states, 2250 states have (on average 1.3293333333333333) internal successors, (2991), 2250 states have internal predecessors, (2991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:03,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2251 states to 2251 states and 2991 transitions. [2024-10-12 20:20:03,744 INFO L78 Accepts]: Start accepts. Automaton has 2251 states and 2991 transitions. Word has length 67 [2024-10-12 20:20:03,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:20:03,744 INFO L471 AbstractCegarLoop]: Abstraction has 2251 states and 2991 transitions. [2024-10-12 20:20:03,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:03,744 INFO L276 IsEmpty]: Start isEmpty. Operand 2251 states and 2991 transitions. [2024-10-12 20:20:03,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-10-12 20:20:03,746 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:20:03,746 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:20:03,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-12 20:20:03,746 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:20:03,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:20:03,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1758026779, now seen corresponding path program 1 times [2024-10-12 20:20:03,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:20:03,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131093582] [2024-10-12 20:20:03,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:20:03,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:20:03,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:20:03,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:20:03,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:20:03,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131093582] [2024-10-12 20:20:03,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131093582] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:20:03,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:20:03,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:20:03,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545781396] [2024-10-12 20:20:03,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:20:03,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:20:03,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:20:03,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:20:03,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:20:03,810 INFO L87 Difference]: Start difference. First operand 2251 states and 2991 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:03,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:20:03,831 INFO L93 Difference]: Finished difference Result 5610 states and 7573 transitions. [2024-10-12 20:20:03,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:20:03,831 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-10-12 20:20:03,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:20:03,836 INFO L225 Difference]: With dead ends: 5610 [2024-10-12 20:20:03,836 INFO L226 Difference]: Without dead ends: 3853 [2024-10-12 20:20:03,838 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:20:03,839 INFO L432 NwaCegarLoop]: 251 mSDtfsCounter, 99 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:20:03,839 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 399 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:20:03,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3853 states. [2024-10-12 20:20:03,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3853 to 3585. [2024-10-12 20:20:03,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3585 states, 3584 states have (on average 1.3348214285714286) internal successors, (4784), 3584 states have internal predecessors, (4784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:03,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3585 states to 3585 states and 4784 transitions. [2024-10-12 20:20:03,870 INFO L78 Accepts]: Start accepts. Automaton has 3585 states and 4784 transitions. Word has length 70 [2024-10-12 20:20:03,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:20:03,870 INFO L471 AbstractCegarLoop]: Abstraction has 3585 states and 4784 transitions. [2024-10-12 20:20:03,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:03,871 INFO L276 IsEmpty]: Start isEmpty. Operand 3585 states and 4784 transitions. [2024-10-12 20:20:03,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-12 20:20:03,872 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:20:03,872 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:20:03,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-12 20:20:03,872 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:20:03,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:20:03,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1753886454, now seen corresponding path program 1 times [2024-10-12 20:20:03,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:20:03,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022363272] [2024-10-12 20:20:03,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:20:03,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:20:03,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:20:03,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:20:03,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:20:03,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022363272] [2024-10-12 20:20:03,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022363272] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:20:03,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:20:03,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:20:03,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198523823] [2024-10-12 20:20:03,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:20:03,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:20:03,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:20:03,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:20:03,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:20:03,933 INFO L87 Difference]: Start difference. First operand 3585 states and 4784 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:03,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:20:03,961 INFO L93 Difference]: Finished difference Result 9457 states and 12714 transitions. [2024-10-12 20:20:03,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:20:03,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-10-12 20:20:03,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:20:03,968 INFO L225 Difference]: With dead ends: 9457 [2024-10-12 20:20:03,968 INFO L226 Difference]: Without dead ends: 6366 [2024-10-12 20:20:03,972 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:20:03,972 INFO L432 NwaCegarLoop]: 233 mSDtfsCounter, 88 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:20:03,973 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 391 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:20:03,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6366 states. [2024-10-12 20:20:04,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6366 to 5912. [2024-10-12 20:20:04,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5912 states, 5911 states have (on average 1.3320927085095584) internal successors, (7874), 5911 states have internal predecessors, (7874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:04,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5912 states to 5912 states and 7874 transitions. [2024-10-12 20:20:04,037 INFO L78 Accepts]: Start accepts. Automaton has 5912 states and 7874 transitions. Word has length 71 [2024-10-12 20:20:04,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:20:04,037 INFO L471 AbstractCegarLoop]: Abstraction has 5912 states and 7874 transitions. [2024-10-12 20:20:04,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:04,037 INFO L276 IsEmpty]: Start isEmpty. Operand 5912 states and 7874 transitions. [2024-10-12 20:20:04,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-12 20:20:04,039 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:20:04,039 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:20:04,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-12 20:20:04,039 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:20:04,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:20:04,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1772874083, now seen corresponding path program 1 times [2024-10-12 20:20:04,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:20:04,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454162019] [2024-10-12 20:20:04,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:20:04,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:20:04,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:20:04,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:20:04,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:20:04,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454162019] [2024-10-12 20:20:04,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454162019] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:20:04,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:20:04,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:20:04,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235562734] [2024-10-12 20:20:04,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:20:04,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:20:04,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:20:04,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:20:04,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:20:04,107 INFO L87 Difference]: Start difference. First operand 5912 states and 7874 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:04,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:20:04,145 INFO L93 Difference]: Finished difference Result 16038 states and 21354 transitions. [2024-10-12 20:20:04,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:20:04,145 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-10-12 20:20:04,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:20:04,155 INFO L225 Difference]: With dead ends: 16038 [2024-10-12 20:20:04,156 INFO L226 Difference]: Without dead ends: 10536 [2024-10-12 20:20:04,161 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:20:04,162 INFO L432 NwaCegarLoop]: 236 mSDtfsCounter, 98 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:20:04,162 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 376 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:20:04,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10536 states. [2024-10-12 20:20:04,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10536 to 9742. [2024-10-12 20:20:04,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9742 states, 9741 states have (on average 1.3203983163946207) internal successors, (12862), 9741 states have internal predecessors, (12862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:04,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9742 states to 9742 states and 12862 transitions. [2024-10-12 20:20:04,243 INFO L78 Accepts]: Start accepts. Automaton has 9742 states and 12862 transitions. Word has length 73 [2024-10-12 20:20:04,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:20:04,243 INFO L471 AbstractCegarLoop]: Abstraction has 9742 states and 12862 transitions. [2024-10-12 20:20:04,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:04,244 INFO L276 IsEmpty]: Start isEmpty. Operand 9742 states and 12862 transitions. [2024-10-12 20:20:04,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-10-12 20:20:04,245 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:20:04,245 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:20:04,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-12 20:20:04,245 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:20:04,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:20:04,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1540660584, now seen corresponding path program 1 times [2024-10-12 20:20:04,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:20:04,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396959170] [2024-10-12 20:20:04,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:20:04,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:20:04,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:20:04,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:20:04,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:20:04,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396959170] [2024-10-12 20:20:04,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396959170] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:20:04,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:20:04,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 20:20:04,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330806115] [2024-10-12 20:20:04,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:20:04,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 20:20:04,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:20:04,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 20:20:04,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-12 20:20:04,397 INFO L87 Difference]: Start difference. First operand 9742 states and 12862 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:04,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:20:04,463 INFO L93 Difference]: Finished difference Result 10728 states and 14175 transitions. [2024-10-12 20:20:04,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 20:20:04,463 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-10-12 20:20:04,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:20:04,473 INFO L225 Difference]: With dead ends: 10728 [2024-10-12 20:20:04,473 INFO L226 Difference]: Without dead ends: 10726 [2024-10-12 20:20:04,474 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-12 20:20:04,475 INFO L432 NwaCegarLoop]: 177 mSDtfsCounter, 0 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:20:04,475 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 872 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:20:04,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10726 states. [2024-10-12 20:20:04,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10726 to 10726. [2024-10-12 20:20:04,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10726 states, 10725 states have (on average 1.291002331002331) internal successors, (13846), 10725 states have internal predecessors, (13846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:04,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10726 states to 10726 states and 13846 transitions. [2024-10-12 20:20:04,565 INFO L78 Accepts]: Start accepts. Automaton has 10726 states and 13846 transitions. Word has length 74 [2024-10-12 20:20:04,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:20:04,565 INFO L471 AbstractCegarLoop]: Abstraction has 10726 states and 13846 transitions. [2024-10-12 20:20:04,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:04,566 INFO L276 IsEmpty]: Start isEmpty. Operand 10726 states and 13846 transitions. [2024-10-12 20:20:04,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-10-12 20:20:04,567 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:20:04,567 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:20:04,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-10-12 20:20:04,568 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:20:04,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:20:04,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1766839438, now seen corresponding path program 1 times [2024-10-12 20:20:04,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:20:04,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255521233] [2024-10-12 20:20:04,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:20:04,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:20:04,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:20:04,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:20:04,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:20:04,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255521233] [2024-10-12 20:20:04,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255521233] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:20:04,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:20:04,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:20:04,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098543977] [2024-10-12 20:20:04,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:20:04,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:20:04,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:20:04,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:20:04,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:20:04,609 INFO L87 Difference]: Start difference. First operand 10726 states and 13846 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:04,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:20:04,661 INFO L93 Difference]: Finished difference Result 26114 states and 33540 transitions. [2024-10-12 20:20:04,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:20:04,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-10-12 20:20:04,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:20:04,678 INFO L225 Difference]: With dead ends: 26114 [2024-10-12 20:20:04,678 INFO L226 Difference]: Without dead ends: 15812 [2024-10-12 20:20:04,688 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:20:04,689 INFO L432 NwaCegarLoop]: 201 mSDtfsCounter, 117 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:20:04,689 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 315 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:20:04,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15812 states. [2024-10-12 20:20:04,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15812 to 15810. [2024-10-12 20:20:04,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15810 states, 15809 states have (on average 1.2649756467834778) internal successors, (19998), 15809 states have internal predecessors, (19998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:04,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15810 states to 15810 states and 19998 transitions. [2024-10-12 20:20:04,831 INFO L78 Accepts]: Start accepts. Automaton has 15810 states and 19998 transitions. Word has length 75 [2024-10-12 20:20:04,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:20:04,831 INFO L471 AbstractCegarLoop]: Abstraction has 15810 states and 19998 transitions. [2024-10-12 20:20:04,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:04,831 INFO L276 IsEmpty]: Start isEmpty. Operand 15810 states and 19998 transitions. [2024-10-12 20:20:04,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-10-12 20:20:04,835 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:20:04,835 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:20:04,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-10-12 20:20:04,835 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:20:04,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:20:04,836 INFO L85 PathProgramCache]: Analyzing trace with hash 834316340, now seen corresponding path program 1 times [2024-10-12 20:20:04,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:20:04,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10122070] [2024-10-12 20:20:04,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:20:04,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:20:04,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:20:05,107 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:20:05,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:20:05,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10122070] [2024-10-12 20:20:05,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10122070] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 20:20:05,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620644445] [2024-10-12 20:20:05,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:20:05,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 20:20:05,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 20:20:05,110 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 20:20:05,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 20:20:05,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:20:05,253 INFO L255 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-12 20:20:05,264 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 20:20:06,186 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:20:06,186 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 20:20:07,257 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:20:07,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620644445] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 20:20:07,257 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 20:20:07,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 14] total 30 [2024-10-12 20:20:07,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986999622] [2024-10-12 20:20:07,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 20:20:07,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-12 20:20:07,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:20:07,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-12 20:20:07,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=794, Unknown=0, NotChecked=0, Total=930 [2024-10-12 20:20:07,260 INFO L87 Difference]: Start difference. First operand 15810 states and 19998 transitions. Second operand has 31 states, 31 states have (on average 7.903225806451613) internal successors, (245), 30 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:15,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:20:15,180 INFO L93 Difference]: Finished difference Result 109388 states and 137103 transitions. [2024-10-12 20:20:15,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2024-10-12 20:20:15,180 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 7.903225806451613) internal successors, (245), 30 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2024-10-12 20:20:15,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:20:15,342 INFO L225 Difference]: With dead ends: 109388 [2024-10-12 20:20:15,342 INFO L226 Difference]: Without dead ends: 101486 [2024-10-12 20:20:15,368 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13638 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=6384, Invalid=28772, Unknown=0, NotChecked=0, Total=35156 [2024-10-12 20:20:15,369 INFO L432 NwaCegarLoop]: 278 mSDtfsCounter, 5067 mSDsluCounter, 4044 mSDsCounter, 0 mSdLazyCounter, 4323 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5067 SdHoareTripleChecker+Valid, 4322 SdHoareTripleChecker+Invalid, 4458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 4323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-12 20:20:15,369 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5067 Valid, 4322 Invalid, 4458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 4323 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-12 20:20:15,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101486 states. [2024-10-12 20:20:16,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101486 to 32808. [2024-10-12 20:20:16,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32808 states, 32807 states have (on average 1.2658578961806932) internal successors, (41529), 32807 states have internal predecessors, (41529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:16,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32808 states to 32808 states and 41529 transitions. [2024-10-12 20:20:16,203 INFO L78 Accepts]: Start accepts. Automaton has 32808 states and 41529 transitions. Word has length 94 [2024-10-12 20:20:16,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:20:16,203 INFO L471 AbstractCegarLoop]: Abstraction has 32808 states and 41529 transitions. [2024-10-12 20:20:16,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 7.903225806451613) internal successors, (245), 30 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:16,204 INFO L276 IsEmpty]: Start isEmpty. Operand 32808 states and 41529 transitions. [2024-10-12 20:20:16,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-10-12 20:20:16,208 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:20:16,208 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:20:16,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-12 20:20:16,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 20:20:16,413 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:20:16,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:20:16,413 INFO L85 PathProgramCache]: Analyzing trace with hash -108251538, now seen corresponding path program 1 times [2024-10-12 20:20:16,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:20:16,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906478235] [2024-10-12 20:20:16,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:20:16,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:20:16,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:20:16,565 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:20:16,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:20:16,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906478235] [2024-10-12 20:20:16,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906478235] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 20:20:16,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285527970] [2024-10-12 20:20:16,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:20:16,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 20:20:16,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 20:20:16,568 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 20:20:16,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 20:20:16,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:20:16,695 INFO L255 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-12 20:20:16,697 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 20:20:17,108 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:20:17,109 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 20:20:17,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285527970] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:20:17,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 20:20:17,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 15 [2024-10-12 20:20:17,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233587382] [2024-10-12 20:20:17,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:20:17,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-12 20:20:17,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:20:17,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-12 20:20:17,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-10-12 20:20:17,110 INFO L87 Difference]: Start difference. First operand 32808 states and 41529 transitions. Second operand has 12 states, 12 states have (on average 7.833333333333333) internal successors, (94), 11 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:17,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:20:17,889 INFO L93 Difference]: Finished difference Result 66957 states and 84701 transitions. [2024-10-12 20:20:17,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-12 20:20:17,889 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.833333333333333) internal successors, (94), 11 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2024-10-12 20:20:17,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:20:17,946 INFO L225 Difference]: With dead ends: 66957 [2024-10-12 20:20:17,947 INFO L226 Difference]: Without dead ends: 53849 [2024-10-12 20:20:17,966 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2024-10-12 20:20:17,966 INFO L432 NwaCegarLoop]: 187 mSDtfsCounter, 415 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 1184 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 1684 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 20:20:17,966 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 1684 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1184 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 20:20:17,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53849 states. [2024-10-12 20:20:18,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53849 to 47693. [2024-10-12 20:20:18,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47693 states, 47692 states have (on average 1.2654533255053257) internal successors, (60352), 47692 states have internal predecessors, (60352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:18,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47693 states to 47693 states and 60352 transitions. [2024-10-12 20:20:18,457 INFO L78 Accepts]: Start accepts. Automaton has 47693 states and 60352 transitions. Word has length 94 [2024-10-12 20:20:18,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:20:18,457 INFO L471 AbstractCegarLoop]: Abstraction has 47693 states and 60352 transitions. [2024-10-12 20:20:18,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.833333333333333) internal successors, (94), 11 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:18,457 INFO L276 IsEmpty]: Start isEmpty. Operand 47693 states and 60352 transitions. [2024-10-12 20:20:18,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-10-12 20:20:18,463 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:20:18,463 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:20:18,478 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-12 20:20:18,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-10-12 20:20:18,664 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:20:18,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:20:18,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1961257754, now seen corresponding path program 1 times [2024-10-12 20:20:18,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:20:18,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427614083] [2024-10-12 20:20:18,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:20:18,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:20:18,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:20:18,734 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:20:18,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:20:18,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427614083] [2024-10-12 20:20:18,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427614083] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:20:18,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:20:18,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:20:18,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770452486] [2024-10-12 20:20:18,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:20:18,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:20:18,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:20:18,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:20:18,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:20:18,737 INFO L87 Difference]: Start difference. First operand 47693 states and 60352 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:19,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:20:19,171 INFO L93 Difference]: Finished difference Result 94849 states and 120113 transitions. [2024-10-12 20:20:19,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:20:19,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2024-10-12 20:20:19,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:20:19,282 INFO L225 Difference]: With dead ends: 94849 [2024-10-12 20:20:19,282 INFO L226 Difference]: Without dead ends: 47695 [2024-10-12 20:20:19,305 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:20:19,306 INFO L432 NwaCegarLoop]: 204 mSDtfsCounter, 86 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:20:19,306 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 338 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:20:19,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47695 states. [2024-10-12 20:20:19,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47695 to 46012. [2024-10-12 20:20:19,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46012 states, 46011 states have (on average 1.246375866640586) internal successors, (57347), 46011 states have internal predecessors, (57347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:20,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46012 states to 46012 states and 57347 transitions. [2024-10-12 20:20:20,017 INFO L78 Accepts]: Start accepts. Automaton has 46012 states and 57347 transitions. Word has length 95 [2024-10-12 20:20:20,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:20:20,017 INFO L471 AbstractCegarLoop]: Abstraction has 46012 states and 57347 transitions. [2024-10-12 20:20:20,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:20,017 INFO L276 IsEmpty]: Start isEmpty. Operand 46012 states and 57347 transitions. [2024-10-12 20:20:20,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-10-12 20:20:20,022 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:20:20,022 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:20:20,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-10-12 20:20:20,023 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:20:20,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:20:20,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1815629671, now seen corresponding path program 1 times [2024-10-12 20:20:20,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:20:20,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700073806] [2024-10-12 20:20:20,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:20:20,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:20:20,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:20:20,271 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:20:20,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:20:20,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700073806] [2024-10-12 20:20:20,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700073806] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 20:20:20,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865206134] [2024-10-12 20:20:20,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:20:20,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 20:20:20,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 20:20:20,273 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 20:20:20,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 20:20:20,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:20:20,406 INFO L255 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-10-12 20:20:20,413 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 20:20:20,621 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:20:20,622 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 20:20:21,163 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:20:21,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865206134] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 20:20:21,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 20:20:21,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 16 [2024-10-12 20:20:21,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275304801] [2024-10-12 20:20:21,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 20:20:21,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-12 20:20:21,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:20:21,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-12 20:20:21,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2024-10-12 20:20:21,165 INFO L87 Difference]: Start difference. First operand 46012 states and 57347 transitions. Second operand has 16 states, 16 states have (on average 15.4375) internal successors, (247), 16 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:21,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:20:21,984 INFO L93 Difference]: Finished difference Result 179863 states and 224438 transitions. [2024-10-12 20:20:21,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-12 20:20:21,984 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 15.4375) internal successors, (247), 16 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2024-10-12 20:20:21,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:20:22,149 INFO L225 Difference]: With dead ends: 179863 [2024-10-12 20:20:22,149 INFO L226 Difference]: Without dead ends: 134390 [2024-10-12 20:20:22,190 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 178 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=307, Invalid=883, Unknown=0, NotChecked=0, Total=1190 [2024-10-12 20:20:22,190 INFO L432 NwaCegarLoop]: 401 mSDtfsCounter, 2089 mSDsluCounter, 2031 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2089 SdHoareTripleChecker+Valid, 2432 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 20:20:22,190 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2089 Valid, 2432 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 20:20:22,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134390 states. [2024-10-12 20:20:23,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134390 to 122405. [2024-10-12 20:20:23,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122405 states, 122404 states have (on average 1.2341508447436358) internal successors, (151065), 122404 states have internal predecessors, (151065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:23,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122405 states to 122405 states and 151065 transitions. [2024-10-12 20:20:23,902 INFO L78 Accepts]: Start accepts. Automaton has 122405 states and 151065 transitions. Word has length 95 [2024-10-12 20:20:23,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:20:23,902 INFO L471 AbstractCegarLoop]: Abstraction has 122405 states and 151065 transitions. [2024-10-12 20:20:23,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 15.4375) internal successors, (247), 16 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:23,902 INFO L276 IsEmpty]: Start isEmpty. Operand 122405 states and 151065 transitions. [2024-10-12 20:20:23,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-10-12 20:20:23,910 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:20:23,910 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:20:23,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-12 20:20:24,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 20:20:24,111 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:20:24,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:20:24,111 INFO L85 PathProgramCache]: Analyzing trace with hash -139860672, now seen corresponding path program 1 times [2024-10-12 20:20:24,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:20:24,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923683258] [2024-10-12 20:20:24,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:20:24,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:20:24,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:20:24,153 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-12 20:20:24,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:20:24,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923683258] [2024-10-12 20:20:24,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923683258] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:20:24,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:20:24,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:20:24,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808222749] [2024-10-12 20:20:24,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:20:24,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:20:24,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:20:24,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:20:24,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:20:24,155 INFO L87 Difference]: Start difference. First operand 122405 states and 151065 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:25,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:20:25,114 INFO L93 Difference]: Finished difference Result 231585 states and 286092 transitions. [2024-10-12 20:20:25,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:20:25,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-10-12 20:20:25,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:20:25,291 INFO L225 Difference]: With dead ends: 231585 [2024-10-12 20:20:25,291 INFO L226 Difference]: Without dead ends: 109719 [2024-10-12 20:20:25,339 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:20:25,339 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 141 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 20:20:25,340 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 174 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 20:20:25,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109719 states. [2024-10-12 20:20:26,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109719 to 107112. [2024-10-12 20:20:26,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107112 states, 107111 states have (on average 1.21771806817227) internal successors, (130431), 107111 states have internal predecessors, (130431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:26,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107112 states to 107112 states and 130431 transitions. [2024-10-12 20:20:26,916 INFO L78 Accepts]: Start accepts. Automaton has 107112 states and 130431 transitions. Word has length 103 [2024-10-12 20:20:26,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:20:26,916 INFO L471 AbstractCegarLoop]: Abstraction has 107112 states and 130431 transitions. [2024-10-12 20:20:26,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:26,916 INFO L276 IsEmpty]: Start isEmpty. Operand 107112 states and 130431 transitions. [2024-10-12 20:20:26,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-10-12 20:20:26,922 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:20:26,923 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:20:26,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-10-12 20:20:26,923 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:20:26,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:20:26,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1149989423, now seen corresponding path program 1 times [2024-10-12 20:20:26,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:20:26,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179007140] [2024-10-12 20:20:26,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:20:26,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:20:26,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:20:26,992 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:20:26,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:20:26,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179007140] [2024-10-12 20:20:26,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179007140] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 20:20:26,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528753637] [2024-10-12 20:20:26,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:20:26,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 20:20:26,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 20:20:26,995 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 20:20:27,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-12 20:20:27,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:20:27,164 INFO L255 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-12 20:20:27,166 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 20:20:27,365 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:20:27,365 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 20:20:27,476 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:20:27,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528753637] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 20:20:27,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 20:20:27,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2024-10-12 20:20:27,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347326056] [2024-10-12 20:20:27,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 20:20:27,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-12 20:20:27,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:20:27,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-12 20:20:27,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-10-12 20:20:27,478 INFO L87 Difference]: Start difference. First operand 107112 states and 130431 transitions. Second operand has 14 states, 14 states have (on average 19.785714285714285) internal successors, (277), 14 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:28,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:20:28,320 INFO L93 Difference]: Finished difference Result 189276 states and 230635 transitions. [2024-10-12 20:20:28,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-12 20:20:28,321 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 19.785714285714285) internal successors, (277), 14 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2024-10-12 20:20:28,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:20:28,421 INFO L225 Difference]: With dead ends: 189276 [2024-10-12 20:20:28,421 INFO L226 Difference]: Without dead ends: 82651 [2024-10-12 20:20:28,462 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 201 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2024-10-12 20:20:28,462 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 1270 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1270 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 20:20:28,462 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1270 Valid, 639 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 20:20:28,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82651 states. [2024-10-12 20:20:29,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82651 to 82353. [2024-10-12 20:20:29,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82353 states, 82352 states have (on average 1.193741499902856) internal successors, (98307), 82352 states have internal predecessors, (98307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:29,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82353 states to 82353 states and 98307 transitions. [2024-10-12 20:20:29,362 INFO L78 Accepts]: Start accepts. Automaton has 82353 states and 98307 transitions. Word has length 104 [2024-10-12 20:20:29,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:20:29,363 INFO L471 AbstractCegarLoop]: Abstraction has 82353 states and 98307 transitions. [2024-10-12 20:20:29,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 19.785714285714285) internal successors, (277), 14 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:29,363 INFO L276 IsEmpty]: Start isEmpty. Operand 82353 states and 98307 transitions. [2024-10-12 20:20:29,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-10-12 20:20:29,369 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:20:29,369 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:20:29,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-12 20:20:29,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 20:20:29,570 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:20:29,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:20:29,571 INFO L85 PathProgramCache]: Analyzing trace with hash -125403330, now seen corresponding path program 1 times [2024-10-12 20:20:29,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:20:29,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96687756] [2024-10-12 20:20:29,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:20:29,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:20:29,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:20:29,631 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:20:29,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:20:29,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96687756] [2024-10-12 20:20:29,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96687756] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:20:29,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:20:29,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 20:20:29,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819266329] [2024-10-12 20:20:29,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:20:29,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 20:20:29,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:20:29,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 20:20:29,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 20:20:29,634 INFO L87 Difference]: Start difference. First operand 82353 states and 98307 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:30,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:20:30,419 INFO L93 Difference]: Finished difference Result 156816 states and 186883 transitions. [2024-10-12 20:20:30,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 20:20:30,419 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2024-10-12 20:20:30,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:20:30,510 INFO L225 Difference]: With dead ends: 156816 [2024-10-12 20:20:30,510 INFO L226 Difference]: Without dead ends: 74989 [2024-10-12 20:20:30,558 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-12 20:20:30,559 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 316 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 20:20:30,559 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 318 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 20:20:30,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74989 states. [2024-10-12 20:20:31,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74989 to 73859. [2024-10-12 20:20:31,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73859 states, 73858 states have (on average 1.1691624468574833) internal successors, (86352), 73858 states have internal predecessors, (86352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:31,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73859 states to 73859 states and 86352 transitions. [2024-10-12 20:20:31,684 INFO L78 Accepts]: Start accepts. Automaton has 73859 states and 86352 transitions. Word has length 106 [2024-10-12 20:20:31,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:20:31,685 INFO L471 AbstractCegarLoop]: Abstraction has 73859 states and 86352 transitions. [2024-10-12 20:20:31,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:31,685 INFO L276 IsEmpty]: Start isEmpty. Operand 73859 states and 86352 transitions. [2024-10-12 20:20:31,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-10-12 20:20:31,692 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:20:31,692 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:20:31,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-10-12 20:20:31,692 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:20:31,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:20:31,693 INFO L85 PathProgramCache]: Analyzing trace with hash 649207884, now seen corresponding path program 1 times [2024-10-12 20:20:31,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:20:31,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873745222] [2024-10-12 20:20:31,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:20:31,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:20:31,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:20:31,781 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:20:31,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:20:31,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873745222] [2024-10-12 20:20:31,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873745222] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 20:20:31,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936989149] [2024-10-12 20:20:31,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:20:31,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 20:20:31,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 20:20:31,784 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 20:20:31,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-12 20:20:31,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:20:31,925 INFO L255 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-12 20:20:31,929 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 20:20:32,135 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:20:32,135 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 20:20:32,243 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:20:32,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936989149] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 20:20:32,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 20:20:32,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2024-10-12 20:20:32,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482093699] [2024-10-12 20:20:32,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 20:20:32,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-12 20:20:32,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:20:32,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-12 20:20:32,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-10-12 20:20:32,245 INFO L87 Difference]: Start difference. First operand 73859 states and 86352 transitions. Second operand has 14 states, 14 states have (on average 20.928571428571427) internal successors, (293), 14 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:33,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:20:33,125 INFO L93 Difference]: Finished difference Result 170466 states and 198590 transitions. [2024-10-12 20:20:33,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-12 20:20:33,126 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 20.928571428571427) internal successors, (293), 14 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2024-10-12 20:20:33,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:20:33,316 INFO L225 Difference]: With dead ends: 170466 [2024-10-12 20:20:33,316 INFO L226 Difference]: Without dead ends: 97133 [2024-10-12 20:20:33,346 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 205 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2024-10-12 20:20:33,347 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 1176 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1176 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 20:20:33,347 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1176 Valid, 615 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 20:20:33,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97133 states. [2024-10-12 20:20:34,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97133 to 81954. [2024-10-12 20:20:34,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81954 states, 81953 states have (on average 1.1607750783985944) internal successors, (95129), 81953 states have internal predecessors, (95129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:34,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81954 states to 81954 states and 95129 transitions. [2024-10-12 20:20:34,389 INFO L78 Accepts]: Start accepts. Automaton has 81954 states and 95129 transitions. Word has length 106 [2024-10-12 20:20:34,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:20:34,390 INFO L471 AbstractCegarLoop]: Abstraction has 81954 states and 95129 transitions. [2024-10-12 20:20:34,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 20.928571428571427) internal successors, (293), 14 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:34,390 INFO L276 IsEmpty]: Start isEmpty. Operand 81954 states and 95129 transitions. [2024-10-12 20:20:34,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-10-12 20:20:34,396 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:20:34,396 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:20:34,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-12 20:20:34,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-10-12 20:20:34,597 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:20:34,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:20:34,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1224761778, now seen corresponding path program 1 times [2024-10-12 20:20:34,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:20:34,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153066983] [2024-10-12 20:20:34,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:20:34,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:20:34,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:20:35,028 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:20:35,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:20:35,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153066983] [2024-10-12 20:20:35,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153066983] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 20:20:35,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676887507] [2024-10-12 20:20:35,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:20:35,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 20:20:35,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 20:20:35,031 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 20:20:35,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-12 20:20:35,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:20:35,170 INFO L255 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-12 20:20:35,172 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 20:20:36,265 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:20:36,265 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 20:20:36,880 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:20:36,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676887507] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 20:20:36,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 20:20:36,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 14] total 41 [2024-10-12 20:20:36,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311492225] [2024-10-12 20:20:36,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 20:20:36,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-10-12 20:20:36,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:20:36,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-10-12 20:20:36,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1498, Unknown=0, NotChecked=0, Total=1640 [2024-10-12 20:20:36,882 INFO L87 Difference]: Start difference. First operand 81954 states and 95129 transitions. Second operand has 41 states, 41 states have (on average 7.512195121951219) internal successors, (308), 41 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:46,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:20:46,567 INFO L93 Difference]: Finished difference Result 262570 states and 305070 transitions. [2024-10-12 20:20:46,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2024-10-12 20:20:46,567 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 7.512195121951219) internal successors, (308), 41 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2024-10-12 20:20:46,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:20:46,831 INFO L225 Difference]: With dead ends: 262570 [2024-10-12 20:20:46,831 INFO L226 Difference]: Without dead ends: 238198 [2024-10-12 20:20:46,861 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8781 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=3734, Invalid=24658, Unknown=0, NotChecked=0, Total=28392 [2024-10-12 20:20:46,861 INFO L432 NwaCegarLoop]: 262 mSDtfsCounter, 4022 mSDsluCounter, 6557 mSDsCounter, 0 mSdLazyCounter, 6974 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4022 SdHoareTripleChecker+Valid, 6819 SdHoareTripleChecker+Invalid, 7030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 6974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:20:46,861 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4022 Valid, 6819 Invalid, 7030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 6974 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-10-12 20:20:47,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238198 states. [2024-10-12 20:20:48,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238198 to 82175. [2024-10-12 20:20:48,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82175 states, 82174 states have (on average 1.160707766446808) internal successors, (95380), 82174 states have internal predecessors, (95380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:48,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82175 states to 82175 states and 95380 transitions. [2024-10-12 20:20:48,436 INFO L78 Accepts]: Start accepts. Automaton has 82175 states and 95380 transitions. Word has length 109 [2024-10-12 20:20:48,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:20:48,436 INFO L471 AbstractCegarLoop]: Abstraction has 82175 states and 95380 transitions. [2024-10-12 20:20:48,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 7.512195121951219) internal successors, (308), 41 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:48,437 INFO L276 IsEmpty]: Start isEmpty. Operand 82175 states and 95380 transitions. [2024-10-12 20:20:48,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-10-12 20:20:48,441 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:20:48,441 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:20:48,454 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-12 20:20:48,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-10-12 20:20:48,642 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:20:48,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:20:48,643 INFO L85 PathProgramCache]: Analyzing trace with hash 38040748, now seen corresponding path program 1 times [2024-10-12 20:20:48,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:20:48,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789626447] [2024-10-12 20:20:48,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:20:48,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:20:48,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:20:48,706 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-12 20:20:48,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:20:48,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789626447] [2024-10-12 20:20:48,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789626447] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:20:48,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:20:48,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 20:20:48,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677618906] [2024-10-12 20:20:48,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:20:48,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 20:20:48,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:20:48,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 20:20:48,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 20:20:48,707 INFO L87 Difference]: Start difference. First operand 82175 states and 95380 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:49,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:20:49,313 INFO L93 Difference]: Finished difference Result 145712 states and 169542 transitions. [2024-10-12 20:20:49,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 20:20:49,314 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2024-10-12 20:20:49,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:20:49,442 INFO L225 Difference]: With dead ends: 145712 [2024-10-12 20:20:49,442 INFO L226 Difference]: Without dead ends: 110656 [2024-10-12 20:20:49,472 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 20:20:49,473 INFO L432 NwaCegarLoop]: 148 mSDtfsCounter, 114 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 20:20:49,473 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 370 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 20:20:49,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110656 states. [2024-10-12 20:20:50,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110656 to 77819. [2024-10-12 20:20:50,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77819 states, 77818 states have (on average 1.1604513094656763) internal successors, (90304), 77818 states have internal predecessors, (90304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:50,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77819 states to 77819 states and 90304 transitions. [2024-10-12 20:20:50,601 INFO L78 Accepts]: Start accepts. Automaton has 77819 states and 90304 transitions. Word has length 109 [2024-10-12 20:20:50,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:20:50,602 INFO L471 AbstractCegarLoop]: Abstraction has 77819 states and 90304 transitions. [2024-10-12 20:20:50,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:50,602 INFO L276 IsEmpty]: Start isEmpty. Operand 77819 states and 90304 transitions. [2024-10-12 20:20:50,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-10-12 20:20:50,607 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:20:50,607 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:20:50,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-10-12 20:20:50,607 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:20:50,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:20:50,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1697262161, now seen corresponding path program 1 times [2024-10-12 20:20:50,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:20:50,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019100502] [2024-10-12 20:20:50,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:20:50,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:20:50,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:20:51,005 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:20:51,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:20:51,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019100502] [2024-10-12 20:20:51,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019100502] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 20:20:51,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954016965] [2024-10-12 20:20:51,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:20:51,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 20:20:51,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 20:20:51,008 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 20:20:51,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-12 20:20:51,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:20:51,156 INFO L255 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-12 20:20:51,158 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 20:20:51,744 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:20:51,744 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 20:20:51,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954016965] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:20:51,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 20:20:51,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [11] total 24 [2024-10-12 20:20:51,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078842506] [2024-10-12 20:20:51,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:20:51,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-12 20:20:51,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:20:51,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-12 20:20:51,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2024-10-12 20:20:51,746 INFO L87 Difference]: Start difference. First operand 77819 states and 90304 transitions. Second operand has 15 states, 15 states have (on average 7.266666666666667) internal successors, (109), 14 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:52,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:20:52,893 INFO L93 Difference]: Finished difference Result 193789 states and 225752 transitions. [2024-10-12 20:20:52,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-12 20:20:52,894 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.266666666666667) internal successors, (109), 14 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2024-10-12 20:20:52,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:20:53,074 INFO L225 Difference]: With dead ends: 193789 [2024-10-12 20:20:53,074 INFO L226 Difference]: Without dead ends: 161643 [2024-10-12 20:20:53,128 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=208, Invalid=1432, Unknown=0, NotChecked=0, Total=1640 [2024-10-12 20:20:53,128 INFO L432 NwaCegarLoop]: 286 mSDtfsCounter, 1297 mSDsluCounter, 2589 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1297 SdHoareTripleChecker+Valid, 2875 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 20:20:53,129 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1297 Valid, 2875 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 797 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 20:20:53,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161643 states. [2024-10-12 20:20:54,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161643 to 91601. [2024-10-12 20:20:54,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91601 states, 91600 states have (on average 1.1591812227074236) internal successors, (106181), 91600 states have internal predecessors, (106181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:54,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91601 states to 91601 states and 106181 transitions. [2024-10-12 20:20:54,555 INFO L78 Accepts]: Start accepts. Automaton has 91601 states and 106181 transitions. Word has length 109 [2024-10-12 20:20:54,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:20:54,555 INFO L471 AbstractCegarLoop]: Abstraction has 91601 states and 106181 transitions. [2024-10-12 20:20:54,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.266666666666667) internal successors, (109), 14 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:54,555 INFO L276 IsEmpty]: Start isEmpty. Operand 91601 states and 106181 transitions. [2024-10-12 20:20:54,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-10-12 20:20:54,560 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:20:54,560 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:20:54,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-12 20:20:54,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 20:20:54,761 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:20:54,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:20:54,761 INFO L85 PathProgramCache]: Analyzing trace with hash 2038193219, now seen corresponding path program 1 times [2024-10-12 20:20:54,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:20:54,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393304164] [2024-10-12 20:20:54,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:20:54,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:20:54,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:20:55,253 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:20:55,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:20:55,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393304164] [2024-10-12 20:20:55,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393304164] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 20:20:55,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842066561] [2024-10-12 20:20:55,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:20:55,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 20:20:55,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 20:20:55,256 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 20:20:55,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-12 20:20:55,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:20:55,423 INFO L255 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-12 20:20:55,425 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 20:20:56,106 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:20:56,107 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 20:20:56,567 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:20:56,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842066561] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 20:20:56,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 20:20:56,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 24 [2024-10-12 20:20:56,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276689674] [2024-10-12 20:20:56,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 20:20:56,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-12 20:20:56,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:20:56,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-12 20:20:56,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2024-10-12 20:20:56,569 INFO L87 Difference]: Start difference. First operand 91601 states and 106181 transitions. Second operand has 24 states, 24 states have (on average 11.125) internal successors, (267), 24 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:58,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:20:58,347 INFO L93 Difference]: Finished difference Result 231748 states and 269738 transitions. [2024-10-12 20:20:58,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-12 20:20:58,347 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 11.125) internal successors, (267), 24 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2024-10-12 20:20:58,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:20:58,564 INFO L225 Difference]: With dead ends: 231748 [2024-10-12 20:20:58,564 INFO L226 Difference]: Without dead ends: 164815 [2024-10-12 20:20:58,637 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=369, Invalid=1523, Unknown=0, NotChecked=0, Total=1892 [2024-10-12 20:20:58,638 INFO L432 NwaCegarLoop]: 176 mSDtfsCounter, 1542 mSDsluCounter, 1962 mSDsCounter, 0 mSdLazyCounter, 1592 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1542 SdHoareTripleChecker+Valid, 2138 SdHoareTripleChecker+Invalid, 1605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 20:20:58,638 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1542 Valid, 2138 Invalid, 1605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1592 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 20:20:58,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164815 states. [2024-10-12 20:20:59,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164815 to 92226. [2024-10-12 20:20:59,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92226 states, 92225 states have (on average 1.159143399295202) internal successors, (106902), 92225 states have internal predecessors, (106902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:59,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92226 states to 92226 states and 106902 transitions. [2024-10-12 20:20:59,955 INFO L78 Accepts]: Start accepts. Automaton has 92226 states and 106902 transitions. Word has length 110 [2024-10-12 20:20:59,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:20:59,955 INFO L471 AbstractCegarLoop]: Abstraction has 92226 states and 106902 transitions. [2024-10-12 20:20:59,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 11.125) internal successors, (267), 24 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:20:59,956 INFO L276 IsEmpty]: Start isEmpty. Operand 92226 states and 106902 transitions. [2024-10-12 20:20:59,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-10-12 20:20:59,960 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:20:59,960 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:20:59,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-12 20:21:00,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2024-10-12 20:21:00,161 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:21:00,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:21:00,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1281357331, now seen corresponding path program 1 times [2024-10-12 20:21:00,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:21:00,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316487392] [2024-10-12 20:21:00,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:21:00,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:21:00,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:21:00,963 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:21:00,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:21:00,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316487392] [2024-10-12 20:21:00,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316487392] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 20:21:00,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262251321] [2024-10-12 20:21:00,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:21:00,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 20:21:00,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 20:21:00,965 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 20:21:00,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-12 20:21:01,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:21:01,090 INFO L255 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-12 20:21:01,091 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 20:21:01,878 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:21:01,878 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 20:21:02,443 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:21:02,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262251321] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 20:21:02,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 20:21:02,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 13] total 39 [2024-10-12 20:21:02,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521412836] [2024-10-12 20:21:02,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 20:21:02,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-10-12 20:21:02,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:21:02,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-10-12 20:21:02,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1331, Unknown=0, NotChecked=0, Total=1482 [2024-10-12 20:21:02,445 INFO L87 Difference]: Start difference. First operand 92226 states and 106902 transitions. Second operand has 39 states, 39 states have (on average 7.897435897435898) internal successors, (308), 39 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:21:03,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:21:03,790 INFO L93 Difference]: Finished difference Result 225191 states and 261961 transitions. [2024-10-12 20:21:03,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-12 20:21:03,790 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 7.897435897435898) internal successors, (308), 39 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2024-10-12 20:21:03,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:21:04,017 INFO L225 Difference]: With dead ends: 225191 [2024-10-12 20:21:04,017 INFO L226 Difference]: Without dead ends: 193116 [2024-10-12 20:21:04,084 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 199 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=382, Invalid=2480, Unknown=0, NotChecked=0, Total=2862 [2024-10-12 20:21:04,085 INFO L432 NwaCegarLoop]: 285 mSDtfsCounter, 1564 mSDsluCounter, 5326 mSDsCounter, 0 mSdLazyCounter, 1328 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1564 SdHoareTripleChecker+Valid, 5611 SdHoareTripleChecker+Invalid, 1330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 20:21:04,085 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1564 Valid, 5611 Invalid, 1330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1328 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 20:21:04,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193116 states. [2024-10-12 20:21:05,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193116 to 92262. [2024-10-12 20:21:05,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92262 states, 92261 states have (on average 1.159081301958574) internal successors, (106938), 92261 states have internal predecessors, (106938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:21:05,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92262 states to 92262 states and 106938 transitions. [2024-10-12 20:21:05,550 INFO L78 Accepts]: Start accepts. Automaton has 92262 states and 106938 transitions. Word has length 111 [2024-10-12 20:21:05,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:21:05,550 INFO L471 AbstractCegarLoop]: Abstraction has 92262 states and 106938 transitions. [2024-10-12 20:21:05,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 7.897435897435898) internal successors, (308), 39 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:21:05,550 INFO L276 IsEmpty]: Start isEmpty. Operand 92262 states and 106938 transitions. [2024-10-12 20:21:05,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-10-12 20:21:05,555 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:21:05,555 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:21:05,570 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-12 20:21:05,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 20:21:05,756 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:21:05,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:21:05,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1314731638, now seen corresponding path program 1 times [2024-10-12 20:21:05,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:21:05,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521885557] [2024-10-12 20:21:05,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:21:05,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:21:05,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:21:06,642 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:21:06,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:21:06,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521885557] [2024-10-12 20:21:06,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521885557] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:21:06,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:21:06,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-10-12 20:21:06,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507842207] [2024-10-12 20:21:06,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:21:06,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-12 20:21:06,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:21:06,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-12 20:21:06,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2024-10-12 20:21:06,644 INFO L87 Difference]: Start difference. First operand 92262 states and 106938 transitions. Second operand has 17 states, 17 states have (on average 6.529411764705882) internal successors, (111), 16 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:21:07,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:21:07,334 INFO L93 Difference]: Finished difference Result 103817 states and 120513 transitions. [2024-10-12 20:21:07,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-12 20:21:07,334 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.529411764705882) internal successors, (111), 16 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2024-10-12 20:21:07,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:21:07,421 INFO L225 Difference]: With dead ends: 103817 [2024-10-12 20:21:07,422 INFO L226 Difference]: Without dead ends: 89035